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Solve the equation 3(x+1) = 21

When solving an equation with brackets, it is often easiest to expand the brackets first.3(x+1) = 21becomes...3x + 3 = 21Now this looks like an equation we know how to solve(minus three from both sides)3x + ...
JM
Answered by James M. • Maths tutor
5395 Views

Solve the equation 5m-2=16-4m

Our ultimate goal is to figure out what m equals.The most important thing to remember is that whatever you do to the left you also do to the right.Let us start by adding 4m to both sides: 5m+4m-2=16-4m+4 ---...
LW
Answered by Lara W. • Maths tutor
3845 Views

If a right angled-triangle has sides A,B,C where A = 4 and B = 3 what is the value of side C?

This problem can be solved using Pythagoras Theorem equation: A 2 + B 2 = C 2 (see diagram for explanation) Substitute the numbers given in the question into this equation:(4) 2 + (3) 2 = C 2 Expand out the ...
GW
Answered by Gina W. • Maths tutor
3649 Views

how do ratios work

ratios are just fractions not written in fraction form, for example 8:9 ratio just means the first value is 8/(8+9) and the second value is 9/(8+9)if a question says that in a ratio of green apples to red ap...
MS
Answered by Minahil S. • Maths tutor
3664 Views

Solve this equation: x²-x-6=0

This equation can be solved by factorisation. Start off with brackets : (x )(x ) =0. We need two numbers that multiply to give 6 and add/subtract to give 1. Start off with 1 and 6. They multiply to give 6 bu...
ED
Answered by Eadaoin D. • Maths tutor
3733 Views