To get 55 without addition or subtraction you need to use multiplying and dividing. 5*11=55
550/10=55
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(x - 5)(x - 11)
7-5x=10-(6x+7) 7-5x=-60x-70 +5x +5x 7=-55x-70 +70 +70 77=-55x Divide -55 -1.4 = x
1/5+1/11 = 11/55+5/55 = 16/55
It's a simple linear equation in 'x'.You can solve it like this:45 - 5x = 5x + 55Add 5x to each side:45 = 10x + 55Subtract 55 from each side:-10 = 10xDivide each side by 10:-1 = x
I suggest you use a calculator that should be installed on the computer or phone you are using. But the answer is 19. ~I